relForLoops is package{
  -- focus on for loops across relations
  
  R is relation{ (1,"one","alpha");
                 (2,"two","beta");
                 (3,"three","gamma");
                 (4,"four","delta");
                 (5,"five","eta")};
                 
  main() do {
    logMsg(info,"R=$R");
    
    for E in R do{
      logMsg(info,"E=$E");
    };
    
    var count := 0;
    for (3,N,L) in R do{
      logMsg(info,"N=$N, L=$L");
      count := count+1;
    }
    assert count=1;
  }
}
  